Chipping machine



Dec. 112, E950 R. H. NlLE ETAL CHIPPING MACHINE 4 Sheets-Sheet l FiledMay 13, 1949 ["llli llllllll|l|w Dec. 1.2, 1950 R. H. NILE ET AL2,533,892

CHIPPING MACHINE Filed May 13, 1949 4 Sheets-Sheet 2 y? 1N VEN TORS WMx/7W, mw

Dec. 12, 1950 R. H. NILE ETAL CHIPPING MACHINE 4 Sheets-Sheet 5 FiledMay 15, 1949 Dec. l2, 1950 R. H. NlLE ETAL CHIPPING MACHINE 4Sheets-Sheet 4 Filed May 13, 1949 /05 /05 /as ,ad mw: 96 5' .l0 7'INVENTORS Patented Dec. 12, 1950 CHIPPING MACHTNE Robert Hugh Nile andMichael S. Roberts, Wellsville, Ohio, assignors to rEhe Sterling ChinaCompany Application May 13, 1949, Serial No. 93,105

Claims.

Our invention relates to machines for chipping or removing pin fragmentsor projecting irregularities from chinaware.

In the manufacture of chinaware, it is customary to rst make the dish ofdesired form, in bisque, that is, an unglazed ceramic. After the bisquein hardened form is made, a glazing material is coated on the dish. Theceramic dish coated with a glazing material is then fired or heated to ahigh temperature in a kiln, The dishes covered with glazing material areplaced in setters or large ceramic receptacles for holding the dishes inthe kiln during the iiring of the glazing material to liquefy the same.These setters or ceramic receptacles contain the dishes which are movedinto and out of the kiln.

In the case of relatively flat chinaware, such as plates, saucers andthe like, the dishes are supported in the setter one above the other invertical rows by means of small ceramic pins. These ceramic pins areinserted in openings provided in the inner wall of the setter andproject inwardly of the setter in a proper arrangement to support onedish above another so that the dishes do not rest upon, nor engage, eachother. The extending pins are so arranged that three of them engage theunderside of the flange or rim portion of the dish and thus provide athreepoint support for each dish. Because the glazing material liqueesduring the firing and thereafter hardens during the cooling periodfollowing the ring in the kiln, these ceramic pins becorne embedded inor adhere to the hardened glazing on the dish. Upon removal of the pinsfrom the dish or the dish from the pins when the dish is removed fromthe setter, the pins fracture at a location near the surface of the dishbut a relatively small portion of the ceramic pin remains embedded in oradheres to the hard glazing. This results in a pin fragment or smallirregularity protruding' outwardly from the otherwise smooth surface ofthe glazed dish.

Because the ceramic pins extending into the interior of the setter forsupporting the dish and the dish setting upon the three pins are in asomewhat irregular arrangement and not completely symmetrical in respectto the dish, it is found that the projecting pin fragments usually arepositioned at variable radial distances from the center of the dish andat varying heights up the inclined outer surface of the flange or rim ofthe dish. Therefore, the location of the protruding pin fragments on theglazed dish after removal from the setter is somewhat vari able fromdish to dish.

These protruding pin fragments are unsightly and furnish sharp anduncomfortable surfaces which may be touched by the hand of a personholding the dish. Therefore, it has been customary and a requirement inthe trade to remove these projecting pin fragments extending from thesurface of the dish. Heretofore, it has been the custom to remove theprojecting pin fragments from the dish by hand operation. One way thatthis has been done is for a person to hold the dish in his hand andplace the dish against a grinding wheel to grind oli the projecting pinfragments. This is a slow and laborious method requiring much handlingof the dish and is also open to the objection that the grinding Wheeloften grinds into the smooth glazed surface of the dish to provide arelatively large scar or unglazed portion around the location of thepin. Even though much care is taken a neat and enicient removal of thepin fragment is not readily obtainable by such method. Another methodsometimes employed is for a person to hold the dish by hand and with asmall chipping tool or chisel held by hand to chip or strike off theprojecting pin fragments. This is quite inaccurate and did not alwayscleanly chip the pin fragment and often mars the smooth surface of thedish. It is a slow, ineicient method of obliterating the pin fragmentand at best is unsatisfactory under actual industrial conditions.

it is an object of our invention to provide a machine which rapidly,efciently and satisfactorily removes the projecting pin fragments from adish.

Another object is the provision of a machine for removing the projectingpin fragments from a dish without marring or otherwise injuring thedish.

Another object is the provision of a machine for removing all of theprojecting pin fragments extending from a dish simultaneously and in oneoperation.

Another object is the provision of a machine arranged to remove pinfragments extending from the surface of the dish at variable locationson the dish.

Another object is the provision of an improved machine for handlngdishes during the removal of the pin fragments from the dish.

Other objects and a fuller understanding of our invention may be had byreferring to the following description and claims, taken in conjunctionwith the accompanying drawings, .in which:

Figure' l is an elevational view ofl a typal 3 dish in the form of aplate, saucer or the like, having a peripheral ange or rim.

Figure 2 is a bottom of the dish shown in Figure 1 and looking in thedirection of the arrows 2-2 of Figure l.

Figure 3 is a perspective view of one of the ceramic pins used insupporting a dish within a setter and shows the ceramic pin before useand before being broken away from a dish or fractured near an endthereof.

Figure 4 is a plan view of our machine showing the relative dispositionof several parts thereof and showing the clamping device used forclamping the dish during the chipping operation situated in one of itsvariable positions.

Figure 5 is a side elevational View of our machine looking in thedirection of the arrows 5 5 of Figure 4.

Figure 6 is an end view of our machine and looking in the direction ofthe arrows 6 6 of Figure 5.

Figure 7 is a plan View of a portion of our machine showing thearrangement of the chipping device in the machine.

Figure 8 is a side view, with portions in section, of the chippingdevice in our machine and is a view looking in the direction of thearrows 8--8 of Figure '7.

Figure 9 is another side View of the chipping device in our machine,with portions shown in section, somewhat similar to that in Figure 8. lnFigure 8, parts of the chipping device are shown in non-operatingposition prior to the clamping of a dish in operating position for thechipping operation. In Figure 9, the parts of the chipping device areshown in operating position with a dish clamped down in position for thechipping operation.

Figures "I, 8 and 9 are on a scale that is enlarged from the scale ofFigures 4, 5 and 6.

Figure l is a side view of one of the chipping blades used in thechipping device.

Figure 11 is an end view of the chipping blade shown in Figure 10, and

Figure 12 is an end View of the same chipping blade shown mounted to theforked end of a supporting holder.

In the several views of the drawing, and particularly in Figures l and2, the reference character II indicates generally a typical dish that isglazed and which has pin fragments extending therefrom. This relativelyflat dish II is of a plate or saucer type having a flange or rim portionI2 extending outwardly and upwardly from the flat bottom I3. An annularpedestal portion surrounds the at central portion at the junction of theiiange I2 and nat bottom portion I3. Extending out from the glazedsurface of the underside of nange I2 are three pin fragments orprojecting irregularities i4. As seen in Figures l and 2, the pinfragments I4 are at variable radial distances from the center of thedish and at varying heights up the side of the ange. The pin fragmentsare small fractured segments of ceramic pins, like ceramic pin I shownin Figure 3. After the breaking away of a pin fragment I5 from a glazeddish after firing and hardening of the glaze, a small corner on one endof the pin I5 is embedded in and adheres to the hardened glazing,leaving the pin fragment I4. It is to the removal from the dishes of thepin fragments, such as pin fragment I4 shown by way of example in thedrawing, that the present invention is directed.

With reference to the several views of the drawings, and particularlyFigures 4, 5 and 6, the

reference character IG indicates generally the frame structure of ourmachine which supports and secures the several parts thereof. The frameI5 has a flat top or horizontal surface I1 which provides a workingsurface for the operator feeding or supplying dishes to the machine.There is a lower supporting portion I8 carried by the frame IE and anintermediate supporting portion I9 carried by the frame upon which partsare carried and secured as herein shown and described.

Disposed horizontally of the top surface I'I and raised a small distanceabove it, is a round turntable or conveyor 2B. This turntable 20 is inthe form of a solid disc having three openings 2| therein and arrangedat degrees from each other, that is, equidistantly spaced in theturntable. The diameter of each round opening 2| is such that itsomewhat exceeds the diameter of a dish II from which pin fragments areto be removed. The turntable 20 is interchangeable with similarturntables having other sized' openings 2I to accommodate other sizedishes. The sizc of openings 2| is such that a dish, such as dish II,may pass through it, and at the same time the internal walls of openings2I on a side thereof engage the edge of the dish and slide 'the dishalong the top of horizontal wall iI in a fairly true arcuate path andwithout excessive deviation therefrom. At one end of the frame l?. thereis a round hole 4I extending through the top surface I. This hole 4I mayroughly approximate the size of openings 2I and its diameter somewhatexceeds the diameter of the dishes to be operated upon by the machine.The general relative sizes of the openings 2l, round hole 4I and typicaldishes worked upon by the machine are illustrated in the views of thedrawings.

A. shaft 22 non-rotatably secured to the turntable 2S extends downthrough an opening in the top wall I'I and is journaled through an upperbearing member 2'I carried by the top wall I1. The shaft 22 rotates inthe bearing member 2l, and as the shaft 22 rotates it revolves theturntable 20. The bottom end of shaft 22 is supported by and journaledto a bearing support member 23 carried on lower portion I8 of the frame.

A. large driving wheel 24 is splined or otherwise non-rotatably securedto the vertical shaft 22, so that as the driving wheel 24 is revolved,the shaft 22 is rotated, which in turn revolves the turntable 20. Theouter circumferential wall of the driving wheel 24 has three notches orrecesses 25 therein, and spaced equidistantly apart, so that the notches25 are disposed at 120 degrees from each other in the drive wheel 24.

On one side of the drive wheel 24 there is positioned a cog or catch 28,which is biased by a spring 3U' to bear against the outercircumferential wall of drive wheel 24 and to catch in a notch 25 whenthe drive wheel 24 revolves in one direction, and to pass over and notcatch in the notches when the drive wheel 24 revolves in an oppositedirection. The cog or catch member 2B is pivotally carried on a post 29to hold it in proper operating position.

As viewed from the top of the machine, such as in the View of Figure 4,the turntable 23 is revolved in a clockwise direction, and to preventits movement in a counterclockwise direction, the cog or catch 28 isarranged so that the ccg permits the drive wheel 24 to move in aclockwise direction but to lock in against counterclockwise movement. Atuniform intervals amounting to 120 degrees of the revolution of thedrive wheel 24, the catch 28 engages in a notch 25 to prevent at thattime the drive wheel from moving in such counterclookwise direction.

An arrangement is provided for moving the drive wheel 24 in steps orincrements of 120 degrees. A collar or sleeve 25 is rotatadly carried onthe shaft 22 so that the collar 2S may freely revolve relative to theshaft 22 so that shaft 22 provides a pivot mounting for the collar 26.rlhe collar 26 has an arm member 33 extending horizontally outward andradial of the collar 26. The outer end of arm member 33 has mountedthereon a vertical post member 32, and pivotally carried on this postmember 32 is a cog or catch member 3|. The cog or catch member 3| isarranged to catch in or engage a notch or recess 25 in the outer wall ofdrive wheel 24. Upon movement of the cog 3i on the post member 32 in aclockwise direction, the cog 3l engages in a notch 25 and revolves thedrive wheel 24 in a clockwise direction. By moving the cog 3! through an120-degree arc, the drive wheel is revolved by an increment of 120degrees, and after completion of movement in that arc, the drive wheel24 comes to rest for an interval of time. During this interval the cog28 on the opposite side of the drive Wheel 24 holds the drive wheel 24against movement in a counterclockwise direction. A spring member 65carried on the outer end of arm 33, shown in Figure 6, resilientlyengages the cog 3l to turn it inwardly toward the drive wheel 24 andthus to resiliently bias the cog 3l into engagement with the outersurface of the drive wheel 24. The post member 32 extends verticallydownward to terminate in the lower end portion 34. This lower endportion is for controlling a timing operation to be later described.

Pivotally carried on the post 32 and thus pivotally connected to theouter end of arm 33 is a horizontally disposed connecting rod 35, whichextends away from the drive wheel 24. The driving end of connecting rod35 is pivotally connected to a post 355 carried on the outer end of arevolving arm 3'! which is driven to swing in clockwise direction by agear-drive device 38. Therefore. upon the swinging of the arm 31 by thegear-drive device 38, the post 35 revolves to reciprocate the connectingrod 35 and to thus recurrently move the cog 3i through an arc of 120degrees.

An electric motor 4G mounted on the lower portion i8 of the frame drivesthe gear-drive device 3S through a suitable pulley, shaft and the belt39.

A triangularly-shaped actuator member 42 is pivotally mounted to andcarried by a pivot support 43 secured to the frame. On one oppositecorner of the actuator member 42, there is a roller 44 pivotally securedthereto so that the rollerf44 has its axis disposed vertically of themachine. At the other of the three corners of the actuator, a connectingrod 46 is pivotally secured thereto by the pivot connection 45. rEheactuator 42 is adapted to move in an arc of approximately 90 degrees onpivot 43 from one operating position to the other. Upon movement ofconnecting rod 35 to move the post 32 toward the gear-drive device 38,that is, toward the .right in Figure 4, the lower end portion 34.- ofpost 32 engages the roller 44 and presses against it to swing theroller44 toward the geardrive device 38 enough to shift the actuatorv 42toward one of its positions. Upon such pivotal movement of the acutator42, by lower end portion 34 striking and moving roller 44, the rod 46 ispulled by pivot connection 45 and thus the rod 46 is moved toward thegear-drive device 38, that is, toward the right in Figure 4. As the rod46 is biased to move toward the left, the actuator 42 tends to resumeits position shown in Figure 4 and holds that position until lower endof post portion 34 in its recurrent movement again strikes roller 44 toswing the actuator 42. In each sweeping action of arm 31 and rod 35, theactuator 42 will be operated once to move rod 4G to the right in Figure4, and after disengagement of lower post portion 34 from roller 44, theactuator 42 immediately resumes the position shown in Figure 4 and therod 46 is permitted to move back, that is, toward the left in Figure 4.

The clamping plate G3 is arranged to recurrently be raised and loweredrelative to the round hole 4! in table top I1 and an opening `2l thenregistering with the hole 4 l. The clamping plate 63 is in the form of adisc having a downwardly projecting edge portion, and on the lowersurface of the plate 63 there is positioned a rubber pad 64, whichextends downwardly below the peripheral edges of the clamping plate 63.The rubber pad 64 is provided to give a gentle and resilient action inthe engagement of the clamping device with the upper surface of thechinan ware plate or saucer and also to provide for a non-slippingengagement between the clamping plate and the dish. As the surface oflthe dish is smooth, the rubber pad 64 engaging the plate prevents orlimits any slippage o1' rotational movement of the chinaware platerelative tothe clamping plate 63. The clamping plate 63 is secured tothe lower end of a bolt or rod G whose upper end extends through anopening in one end of a rocker arm 59. There is a nut or head 52 securedto the upper end of bolt E53 above the rocker arm 59 to support the rod6i! and to prevent it from slipping downwardly through the opening inarm 59. A coil spring 5! is positioned around the bolt iii? and locatedintermediate the rocker arm 59 and the clamping plate 63, and thetension of the coil spring Si is such that it resiliently urges theplate 63 downwardly away from the rock arm 59. The coil spring El thusfurther provides a resilient cushioning action for the clamping plate 63and provides means for urging the clamping plate 63 downwardly relativeto the outer end of the rocker arm 59. y

The rocker arm 5B is pivotally carried by pivot support 5l, which inturn is carried by the frame I5, the pivot support 5l' being positionedintermediate the ends of rocker arm 59 so that pivot support 57 forms afulcrum for the lever action of rocker arm 55. A relatively verticallydisposed rod 52 has its upper end pivotally connected with the outwardlyextending end of rocker arm 59 by means of a pivot connection 58. Thepivot connection 58 is closer to the pivot connec-l tion 5'! than is thebolt GQ carried by the other end of the arm 59. As the long rod 52reciprocates upwardly and downwardly, this y'corre-- spondingly rocksthe arm 59 on pivot connection 51 and thus the clamping plate 53 isintermittently raised and lowered as the rod 52 is reciprocated in avertical direction. The rod 52 is reciprocated by means of an eccentricdrive device 5l, which is mounted on the end of a shaft 49, lwhich shaft49 is journaled in a bearing 54 7 carried by the frame. In actualalignment with the shaft 49, there is a driving pulley 53 andintermediate shaft 4S and driving pulley 53, there -is a clutchmechanism 48. By operating the clutch mechanism 48, the connectionbetween driving pulley 53 and shaft 49 is engaged and disengaged. Theclutch mechanism 4B is operated by a clutch lever 41, so that on themovement of clutch lever 41 in one direction, shaft 49 and pulley 53 arein driving engagement and upon movement of clutch lever 41 in anopposite direction, the driving pulley 53 and shaft 49 are disengagedout of drivingr connection.

The connecting rod 46 having its one end connected by the pivotconnection 45 to the actuator 42, has its other end connected to theupper end of the clutch level` 41. so that upon reciprocation ofconnecting rod 46 the clutch lever 41 is moved from one of its operatingpositions to the other of its positions, and thus reciprocation of rod4B by actuator d2 operates the clutch mechanism 48. A

Driving pulley 53 is rotated by a belt 54, which in turn is driven bygear reduction device 55, which in turn is drivenby a belt 56 in engagement with and driven by an electric motor 19. The electric motor 19 thusdrives the pulley 53 and when the clutch mechanism 48 is in engagingposition, drives the eccentric device 5| to reciprocate the rod 52, andthus to move the clampingr plate 63.

Therefore, the revolving of the turntable or conveyor 2D is synchronizedwith the raising and lowering of clamping plate 63, because the clutchmechanism 48 is operated bythe drive mechanism for rotating theturntable 26.

The spring in the clutch. mechanism 48 is such as to resiliently movethe rod 46 in one direction to keep the actuator 42 in position shown inFigure 4 until the lower post portion 34 presses against and moves theroller 44, The dimensions, spacing and arrangement of the several partsand the interconnection between the clamping device 63 and the revolvingturntable 20 is such that the proper synchronization is obtained toraise the clamping plate 63 free and clear of the top or' the turntable2li between movements of one opening 2| to position below the clampingplate and the movement of the next successive opening 2| to thatposition. Upon registering of an opening 2| with round hole 4| in tabletop I1, the synchronization is such that the clamping plate 53 is moveddownwardly and through the aligned opening and round hole,

The chipping device of our machine is mounted upon a support member 66which is carried byV the intermediate supporting portion i8 of frame i6.The general outline of the chipping device is shown in Figures 4, 5 and6, below and in alignment with the round hole 4| in the top surface |1of frame I6 and below the clamping device 63. In Figures '7, 8 and 9,which are on an enlarged scale, detailed construction of the chippingdevice is shown. The journal support 61, having a fixed post 86vextending upwardly and centrally thereof, is rigidly secured to andcarried by the support member' 66.' A rotating body is carried by thesupport 61 and upright post 8! so as to revolve around' the axis of theupright post 86. This rotating 'body is' comprised of a hollow cylinder68 and associated parts. Secured to the lower end ofthe revolvingcylinder 68 and extending radially therein is a lower race member 14.Another ball bearing race 18 is secured tothe support member 61, and

between the races 14 and 18 are a plurality of ball bearings 15. Thus,at the lower end of the revolving cylinder 68, the bearing supportprovides for the revolving of the cylinder 68 relative to the uprightpost 80, which is in xed position.

A pulley 69 is splined or other side rigidly secured to the revolvingcylinder 68 in such manner that the revolving pulley 69 revolves thecylinder 68. A belt 1U, in engagement with the pulley 69, is driven by apulley 1|, which in turn is driven by an electric motor 12. A supportbracket 13 carried by the support member 66 supports the motor 12 inproper aligned position. Thus, the electric motor 12 revolves thecylinder 68 and all of the parts carried thereby.

Adjacent the upper end of the revolving cylinder 63, an upper race 16 issecured to the cylinder 63 and disposed radially inward thereof, therace member 16 revolving with the cylinder 68. A plurality of ballmembers 11 ride in the race member 15 and are disposed around theannular extent thereof.

Positioned over the upper end of the cylinder 63 .is a securing cap orcollar 85, which is non-rotatably secured and engaged to the uprightpost 80 by a set screw 86. Between the cap or collar member 85 and therace member 16 carried by the cylinder 68, there is a spacer collar 83,and below the collar 83 is a race member 84. The spacer collar 83 andrace member 84 are relatively stationary and tend to remain in xedposition with the upright post S8. There is a clearance between theupper edge of cylinder 68 and securing cap or collar member 85, so thatthe cylinder 68 may freely revolve relative to securing cap or collarmember 85, the spacer collar 83 and the race member 84. The plurality ofball bearings 11 between race members 16 and 8,8 provide a good bearingsupport between the race members.

There ls an open space or bore 8| extending downwardly into the fixedpost 80 from the top thereof. Within the open space or bore 8| there ispositioned a plunger or reciprocal member 38, the plunger 88 slidablyfitting within the open space or bore 8| so as to be reciprocal relativeto the xed post 88. Within the open space or bore 8| and below theplunger 88, there is positioned a coil spring 82 resiliently pressingupwardly on the bottom of the plunger 88 and tending to move the plunger88 outwardly of the bore 8|. Mounted upon the upper end of the plunger88 there is 'a disc or a 'plate member 9|, having upturned peripheraledges as shown. Mounted on the plate 9| is a rubber pad 92 situatedbetween the upturned peripheral edges. The plate 9| provides a clampingplate for clamping chinaware dishes during the chipping operation. Therubber pad 92 acts as a resilient cushion for dishes pressed downwardlythereon and provides a non-slipping engagement with a at bottom I 3 of adish, such as dish The clamping plate 9| and rubber 'pad 92 are referredto as the lower clamping member, and the clamping plate 63 and rubberpad 64 carried by the rocker arm 59 are referred to as the upperclamping member. The arrangement -is such that with the upper clampingmember in lowered position, a dish to be subjected to the chippingoperation is pressed down and firmly clamped between the two clampingmembers. The clamping members rmly and gently hold the chinaware dishwithout marring it and with. out permitting it to rotate during thechipping =f operation. The size of the clamping plates is such that theyengage the intermediate part of the chinaware dish and tightly squeezethe flat bottom portion I3 of the chinaware dish while the parts Aare inclamping position for the chipping operation.

To provide for limitation of the reciprocal movement of the plunger 88relative to the xed post 89, there are provided longitudinal slots 81 onopposite sides of the iixed post 89 at the upper end thereof. To closethe upper end of the slots 8l, a collar 99 is secured to the upper endof the xed post 99 to provide a stop for the pins 89 n its upwardmovement. Thus, the Ipins 89 in slots 81 provide means for limiting thereciprocal movement of plunger 88. The pins 89 extend radially outwardfrom, and are secured to the reciprocal plunger 88. By means of theaction of the coil spring 82 and the pin and slot arrangement, provisionis made for a resilient and a limited movement of the lower clampingmember. Upon downward pressure on the lower clamping member, the plunger89 is moved downwardly to permit a dish clamped thereby to be carried toa position for the chip-ping operation. After release of this downwardpressure, the coil spring 82 causes the lower clamping member to riseupwardly so that the top of the clamping member, that is, the uppersurface of the rubber pad 92, is substantially on the same plane as thetop of the flat top l1, extending over the frame I9. The downwardpressure on the lower clamping member is provided by a dish beingpressed downwardly thereon by the upper clamping member. Upon release ofthis downward pressure, the dish is resiliently carried upward away fromthe continuously revolving chipping device and to a plane where it maybe laterally moved away from the chipping device by the turntable 29.The upward position of the plunger 88 to where the lower clamping memberis in its raised position is illustrated in Figure 8. In this positionthere is no dish being pressed downwardly upon the rubber pad 92 ofclamping plate 9|.

A flat, horizontally-disposed disc or wheel 93 is secured to the upperend of revolving cylinder 68 so as to revolve therewith. This flat disc93 has six holes extending therethrough, each of the holes being at avariable radial distance from the axis of the disc 93. Extendingvertically through each of these holes is a cylindrical body 94, so thatthere are six cylindrical bodies 94 carried by the horizontal disc 93.The radial distance of each of these bodies 94 from the axis of the disc93 is somewhat different in the case of each body 94. The bodies 94 arespaced apart from each other relative to said axis at about 69 degreesfrom each other. Because of the inclination or slope of the bottomsurface of the iiange portion I2 of dish and because of the variedradial distances of each body 94 from the axis of the disc 93, and hencefrom the axis of a chinaware plate held in operating position, theeleva-l tion of respective bodies 94 is varied so as to ac commodate thechipping device to the shape of the dish. For example, in Figures 8 and9, the

body 94 on the left side of each View is positionedv at a higherelevation than the body 94 on the right side in said views. In the caseof each of the six cylindrical bodies 94, the elevation thereof isdetermined according to the radial distance of the respective body 94from the axis of thev iixed -post 80, that is, the axis of the wholechipping device. Those cylindrical bodies 94 radially inward of the disc93 are positioned at a relatively lower elevation. As the radial spacingof each body 94 varies from the radial spacing of the others, so too theelevation of each body 94 varies from that of the others. To lock eachcylindrical body 94 securely to the disc 93 and at the determinedelevation, a set screw 95 embedded in a suitable radially directedthreaded opening in the disc 93 is provided. As there are six bodies 94,there are six embedded set screws 95, each of which is used to secure abody 94 in proper position relative to the disc or wheel 93.

Each body 94 has an opening extending therethrough, the opening beingdesignated by the reference character 96. This opening or bore 96 isrelatively large in diameter at the lower end of the body 94 and is ofsmaller diameter at the upper end of the body 99. There is a shoulder orstep portion between the small upper portion and the larger lowerportion of the bore. A plunger member 99 slidably tting in the smallerportion of bore 96 is adapted to reciprocate therein. Each plungermember 9S has an enlarged head 99 which is only slightly smaller thanthe diameter of the larger portion of the bore 96 and greater than thediameter of the smaller portion of the bore' 96, whereby the head 99 isformed to abut, or be stopped by, the shoulder between the two portionsof the bore. Thus, the plunger 98 mightfreely reciprocate in the smallerportion of the bore, but the head 99 prevents the plunger 99 from risingbeyond the limit permitted by the abutment of the head 99 with theshoulder provided within the bore 99.

A coll spring 91 is positioned within the bore 9S of each body 94 and isarranged to resiliently.

urge the plunger 99 upwardly relative to the body 94. A threaded cap |99threadably engages and is secured to the bottom of each body 94 to closethe bottom end of the bore 96. The closure or cap |99 has a threadedopening extending therethrough which threadably receives a bolt |9|. Asmall disc |93, slightly smaller in diameter than the bore 96, ispositioned within the bore 96 and rests upon the upper end of the bolt|9|. provided to lock the bolt in desired threaded en gagement with thecap member |99. The lower end of each coil spring 9'l rests upon thesmall disc |03 whereas the upper end of the coil spring 91 pressesupwardly against the head 99 of plunger 98. By turning the bolt |9|, theelevation of disc |93 may be varied and thus the tension on spring 9imay be varied as required. After this adjustment is made, the bolt |92is locked in the determined position by the locking nut |92. As thereare six bodies 94, there are likewise six respective plungers 98, sixrespective coil springs 97 and six respective assemblies of discs |93,bolts |9l, closing caps i90 and locking nuts |92.

Mounted upon the upper end of each of the six plungers 98 is a chippingblade |94, by means of a pivot pin H9, which extends across betweenforked ends of the plungers as illustrated in the drawing. The chippingblades |94 are'made of steel or other suitable hard material, having a Alocking nut |92 on the bolt |9| isl suited for forming a hard, Asharp.chipping edge at the corner W5. Extending transversely through thechipping blade I'i', is a hole lili and the pivot pin Ill extendingthrough the forked ends of plunger 98 at the upper end thereof providesa pivot support for the chipping blade lull, whereby the chipping bladewe may pivotally rock on the `pin im. rI'he opposite flat sides of`chipping blade |164 are designated by the reference characters L08 andIUS. 'l'lie flat side .Iii extends upwardly more than .the flat side.|09 and the connecting surface between them adjacent the sharp edge Iis slanted as shown. Thus, on the side of the chipping blade coincidingwith the flat vside |68, the side of sharp edge |135 coinciding withfiat side Hi8 is Iiat and vertical. On the other side of the chippingblade adjacent to the sharp edge I the side is sloping or inclined.

As shown, the upper end of each plunger 93 is forked to accommodate achipping blade |05. The bottom or wall, designated by the referencecharacter iII, of the forked or recessed end of plunger S8 is spacedfrom the bottom edge of the chipping blade H54. rlhis spacing isprovided So that the chipping blade iil may freely pivotally rockbetween limits on the -pin I I, the limit to the rocking motionpermitted being provided by the vbottoni wall III of the recessed end orcrotch in the end of yplunger 98. rll'herefore, there is limited rockingmovement permitted to each chipping b.-ade lull to better accommodateeach blade to the contour and surface on the bottom of flange I2 oi'dish II. Upon moving the dish I i downwardly to contact the dish flangeI2 with the chipping blade H14, the chipping blades will pivotally rockso as to position the long sharp cutting edge Ili in correspondence withthe inclination of the flange l2 of dish II.

The chipping blades |04 are so mounted to the plungers Q8 that the flatoi abrupt side |08 adjacent the cutting edge |85 of each blade firstmeets or encounters the pin fragments i4 eX- tending out from thesurface of the dish. Therefore, the disposition of the chipping bladerelative to the plunger 96 depends upon the direction or" rotation ofcylinder S8 as driven by pulley 69. In the arrangement shown in Figures7, S and 9, the cylinder Se and hence the body 91E and chipping `blades|94 are revolved in a clockwise direction as viewed in lookingdo-wnwaidly of the chipping device. Thus, on the right-hand side of thedevice shown in Figures 8 and 9, the fiat abrupt side |68 appears,whereas the chipping device on the left-hand side of these views showsthe short side |99. By this arrangement, a good, strong and positivechipping action is obtained in that the flat vertical side of thechipping blade adjacent the cutting edge meets the projecting .pinfragments at the proper angle to cleanl7 chipor sever them from thedish. Should the chipping device revolve in an opposite direction, thesloping sides inclined down toward the short side |69 of each chippingblade would slide by a camming action over the pin fragments. Theresiliency of the coil springs Sli in each body Si? would permit thechipping blades to thus slide over the projections without cleanlychipping them olf if the chipping blades were not properly arranged inrespect to the direction of revolution oi the whole chipping device. 'Itis found by the arrangement shown that a. clean denite chipping actionis obtained and the ypin fragments are knocked olf level with the outersurface of the dish adjacent the pin fragment. 'By

reason `of the yresilient mounting Aof Athe chipping" blades, thechlpplng blades readily slide `over and glide V4upon-the smooth, glazedsuriace ofthe dish until the edges thereof meet 'the projecting -pinfragments and by reason of the angularl'ty'oi' -tne chipping blade atthe lchipping edge, trie Ipin frag-ments are cleanly chipped olf and thechipping blade continues in a gliding Acourse around the under-Surface'of the flange portion of the dish.

l'lhe operation of the lmachine Vis substantially as follows: rrheseveral motors are started 4and this 'causes the Iturntalzlle 'or'circular lconveyor 2d to revolve, ythe chipping 'blades i114 torevolve, and the upper clamping device -63 to intermittenlyraise andvlower relative to the lower clamping plate through a clamping andVir'riclarnping operation. Dishes, such as dish 1|, -are placed in anopening 22| or' turntable 2U before `such opening Z1 reacne's theoperating position above trie chipping device. In Figure el, this wouldbe the opening 2| Ynearest tne bottom of that view. The dlsnes may besuccessively fed to tne turntable by an operator or by any othersuitable leed, such as a belt conveyor. Upon revolving oi tne turntable2u in a clockwise direction, the successive dishes are carried one at atime to position over 'the chipping device. `When the disn upon whichthe chipping operation is to taire yplace is positioned directly overtne chipping device, the turntable stops by means ol' Lne synchronizingaction of the drive hereLoIore described, whereln the turntable moves inincrements of 12u degrees. When over this position,

tliebottom nat portion i3 oi dish II rests upon the rubber pad U2 of thelower clamp-ing device, and at that moment the dish is in the samehorizontal plane as other dishes on tlie 'top vof Vthe horizontalsurface l1. 'lhe intermittent action oi' the clutch mechanism 48thereupon causes the upper clamping member, and particularly theclamping plate o3 and rubber pad 64, to descend downwardly to engage theupper surface of the plate intermediate the flange and to force theplate downwardly so that it assumes the gposition shown in Figure 9. .Inlthis position, the spring t2 has been compressed and 4the vclampingmembers 63 and `SI firmly grip and clamp the plate therebetween, therubber pad engaging the surface cf the dish. .The upper clamping membervthus .moving :the plate downwardly to over come the .upward .bias A.of`the lower clamping member brings 'the dish .downwardly so that `thebottom surface of the flange .I2 of the dish is ingood engagement with'the I.chipping edge |05 of the several chipping 4blades |04. As the`chipping .device is .revolving during .all .this time, the chipping.blades .rapidly and efficiently .chip yaway and remove ,the projectingpin fragments I4 on the dish Ill. The cycle of 4operation is such 4thatseveral .revolutions of the chipping device :take place while .theldishis=clamped down in firmengagement with the chipping blade. By reason ofthe 'variable spacing of the @chipping blades, =pin fragments.projecting at variable radial distances from lthe center of the dishwill all be encountered vand chipped away 'by at Ileast one -of thechipping blades, and 4in most instances by more than 'one of the blades,Vdepend-ing upon the length vof neach chipping edge v|05 relative to thesides of the dish. Aftera few revolutions of the chipping devicewhile'the plate lis down, the arm 3f? on the gear -device 38 has moved to 'aAposition where the -cog "3| engages the drive wheel '24 for movement ofanother movement to 120 degrees. At this stage of the operation, theclutch mechanism d8 is operated by the actuator 42 to move the upperclamping member, and upon its upward movement the spring 82 in iixedpost 8S raises the lower clamping member to its elevated position shownin Figure 8. The turntable 2U then revolves and moves the dish fromwhich the projecting pin fragments have been chipped away to the nextoperating cycle, whereby the finished dish is moved to a third positionat 120 degrees from the position of chipping operation and there removedfrom the machine. The dish may be moved manually, or as we prefer, thetop wall surface il' is cut away at this third position immediatelybelow the opening 2| h-olding the finished dish to permit the dish tofall or slide through the upper wall surface Il to the lower part oi themachine. A chute cr slide is readily arrangable to permit the finisheddishes to move by gravity from the turntable 2G after they have passedthrough the chipping operation. A successive dish to undergo thechipping operation, having been moved forwardly through an arc by theturntable, is next in position over the chipping device where theoperation is repeated. Thus, for each complete revolution of theturntable 2t, three dishes are subjected. to the chipping operation. Allof the moving parts of the machine are synchronized and no regulationsor changes are necessary after the operation has once been started. Thedishes with pin fragments are supplied at one place to the turntable andthe nished dishes are removed at another location. By this means, aseries of successive dishes are rapidly and elllciently treated toremove the pin fragments and without manual handling in the chippingopera# tion. It is understood that another conveyor system other thanthe round turntable 20 may he used by appropriate rearrangement.

It has been found that this machine chips the pin fragments from thedishes not only more eiiiciently and rapidly than has heretofore beendone, but also in a way that breakage of dishes is obviated and scarringor marrng of the surface of the glazed dishes is eliminated. Otheradvantages and beneiits of our machine are apparent from theconsideration of the mechanism herein disclosed.

The present disclosure includes by reference herein the description setforth in the appended claims, as well as the foregoing detaileddescription of the machine shown and described in particularity as thebest exempliiication of the machine in its present form.

Although the invention has been described in its preferred form with acertain degree of particularity, it is understood that the presentdisclosure of the preferred form has been made only by way of exampleand that numerous changes in the details of construction and thecombination and arrangement of parts may be resorted to withoutdeparting from the spirit and the scope of the invention as hereinafterclaimed.

What is claimed is:

1. A machine for removing pin fragments or the like from chinawaredishes concave, compris ing in combination a. supporting structure, renvoluble body carried by the said structure, a plurality of reciprocalmembers carried by sai-fl body and aligned substantially parallel to theaxis of said body, said reciprocal members being spaced at a.. pluralityof radial distances from the axis 14 of said body, resilient means forresilently urg-l ing said reciprocal members in one direction, achipping blade carried by each said reciprocal member, a first engagingmember positioned in axial alignment with said body, said engagingmember being adapted to engage within the concavity of and on one sideof a said dish, a second engaging member adapted to engage the oppositeside of said dish, operating means for moving one said engaging membertoward and away from the other said engaging member for the clamping ofa dish therebetween and the releasing of said dish, said first engagingmember in clamping position being within the concavity of said dish andin releasing position being removed from the concavity of said dish toclear the same, conveyor means movable between said engaging memberswhile in releasing position and transverse to the line of relativemovement between said engaging members for moving consecutive dishes toa position between said engaging members and away from said positionduring separating of said engaging members and clearance of the dish bysaid iirst engaging member, driving means for revolving said body torevolve said reciprocal members and blades relative 'to the axis of saidbody, and means for synchronizing the operation of said operating meansand said conveyor means to provide movement oi' the conveyor meansduring separation of the engaging members, the arrangement being suchthat upon a dish being moved by said conveyor means to between saidengaging members and clamped therebetween, the said blades care rled onsaid reciprocal members, urged in said one direction by said resilientmeans, and revolved by said body, slide around on, and in closeengagement with, a side of said clamped dish and upon meeting said pinfragments chip the same Irom the dish. l

2. A machine. for chipping irregularities projecting from articles,comprising in combination clamping means for clamping a said article atan operating position, said clamping means being movable betweenclamping and unclamping posltions in a first line of action, conveyormeans for conveying consecutive articles to and from said clampingmeans, said conveyor means being movable in a second line or" actiontraversing said first line of action, a revoluble chipping memberadapted to chip an irregularity proiecting irom an article clamped atsaid position, means for moving said clamping means in said rst line ofaction toward and away from said chipping member to move said article toand away from said oper-ating position, and means for synchronizing themovements of said conveyor means and said clamping means to provide forserial movement of consecutive articles by said conveyor means in saidsecond line of action and by said clamping means in said first line ofaction to and from said operating position for chipping ofirregularities from said articles 'b3 said chipping member.

3. Apparatus for removing from glazed ceramic dishes the ceramic pinfragments or the like ad ,hering thereto, comprising in combination asupporting frame, a revoluble chipping device carried by said frame forchipping said fragments from a said dish held at an operating posi*-tion, said chipping device including a plurality of chipping blades,individual mounting means for each of said blades, resilient meanscarried by each said mounting means for urging said blades toward saidoperating position, and driv-4 'atea-sca ing means for revolving saidmounting means, resilient means and blades about a common laxis.said'bla'des being positioned at a plurality .of radial distances fromsaid axis to encounter pin fragments at varied radial ldistances from4the center -of -a said dish and `being flexibly connected to saidmounting means, respectively,`to permit ready accommodation of saidblades lto the contour of a said dish, holding v.means :movable in asecond line 1of action ytraversing at right angles the first line ofaction for holding Va Ysaid dish at said operating position, saidholding means being movable in a yfirst line of action substantiallycoinciding with said common yaxis to carry a said dish to vsaidoperati-ng position from a position `spaced from said operationIposition, and conveyor` means for successively =mov ing `dishes to andfrom said vposition spaced -from said operating position, thearrangement vof said chipping device, holding means vand conveyor means-being such that Ydishes fare consecutively conveyed to said'operatingposition, held at said operating position by said holding means, .andthe said fragments adhering lthereto are chipped lfrom the dish by theblades of the chipping 4device revolving -relative -to said dish.

4. -In apparatus -for the removal of pin -fragments protruding from theperipheral portion of the bottom side vof lg-lazed chinaware dishes,

achippingldevice adapted to-chip said fragments from said dishescomprising in combination, a supporting base, a pedestal member vcarriedtby the base, .a .plunger -member carried by, .and reciprocalbetweenlimits relative to, :said pedestal member, an engaging membercarried by said plunger member and adapted to Iengage'the bottom side ofa said Vdish intermediate yof vsaid peripheral -portion of the fdish,virst resi-lient means carried lby said pedestal A'member forresiliently urging said plunger vmember Vto ex tendrelativeto-saidpedestal rnember'and'to bias said engagingmember towardthe'bottom side of said dish, said :iirst resilient meansbeingsopposableby Aa fdish pressed 'against said Iengaging member 4to -provide limitedresilientmovementV o'f saidengagingmember relative to said vpedestalmember, va revoluble member carried by said supporting base landYadapted -fto revolve around thefaxisof said pedestalmember, a:pluralityof chipping-.blade holders carried by -said revoluble memberandfarranged'to position 1a plurality yof chipping blades, respectively,Vat -a plurality :of radial distances fromthe axis-of `saidrpedestalmember and stofdirect vsaid chipping blades -toward theperipherallportion ofthebottom side of saididish, and-second resilientmeans Acarriedby each said chipping-blade yholder for lresilientlyurging the .chipping blade carried i' thereby toextend relative 4to saidlrevoluble lmember 1and -to bias said chippingbladetoward thefbottomside of Isaid dish, the revolution-of chipping blades carried .by saidholders and biased-toward said dishchipping saidpin fragments fromsaid-dish resiliently engaged by saidiengagingxmember.

.5. 'A chipping blade forincorporation inamachineadapted to chip .pinfragments from a dish, said machinehaving a chipping-blade holder formounting. said chipping blade, saidV holderhaving apivot. member.adapted to Vengage.'saidxchipping blade and a vguide .portion for4accommodating said ,chipping bladegandmaintaining the same in a planedisposed vsubstantially radially of said dish, said chipping bladecomprising-a body of metalhaving oppositeparallel walls `adaptedto'engage said guide portion and to. move within said guide portion insaid plane, said body having an open space for accommodating said pivotmember, said open space having an arcuate wall adapted to form a bearingfor said pivot member, said opposite walls of the body on an end of saidbody converging to form an edge portion, the wall on one side of, anadjacent, said edge portion being disposed in a flat plane and adaptedto be rdisposed substantially radially of said dish, the opposite wallof said body adjacent said 'edge portion converging in a slope towardsaid Aedge portion jin said flat plane, the arrangement of said oppositewalls, arcuate wall and edge -portion being such that said body maypivotally rock on said pivot member while guided in said at plane toconform the position of said body in said plane to the contour of saiddish and upon relative revolutionary movement between said chippingblade and said dish in one direction, the flat wall on one said one sideat said edge portion may abruptly meet a pin fragment on `said dish,,and in an opposite direction the sloping wall on said opposite side atsaid edge portion 'may slidably cam over a pin fragment on said dish.

6. A chipping vblade for incorporation in a machine-adapted to chip pinfragments from a dish, said chipping blade comprising a metal bodyhaving atene of its ends a hard chipping-edge portion adapted to engageand chip a said pin fragment, a guiding-surface portion adapted toslidably engage Ysaid machine for maintaining the chipping .blade in apredetermined plane, an arcuate bearing portion adapted to -pivotablyengagesaid machine for permitting pivotal movement of said chippingblade relative to said machine .and ,in said plane, and amovementlimitinglportion at an opposite end of said body and adaptedtoenga-ge said machine at two limiting positions for limiting saidpivotal movement of said chipping blade in said plane.

7.,A=1r1achine for Ychipping pin fragments from ceramic-dishes,comprising in combination chipping meansadapted to engage a said dish atan operating ,position and adapted to chip ,a said fragmentfrornsaiddish at said operating position upon movement of said chipping means,support means Vfor said chipping means, revolving means A:for revolvingsaid support ,means and chipping means about an axis, biasing means forurging said chipping means in one direction, movable .clamping Ameansfor clamping a said dish Lin said operating position, said movableclamping meansincluding a reciprocable plunger member adapted to .fitwithin, andengage the upper surface of, a said dish and a reciprocableengagingmember resiliently biased toward said plunger member and adaptedto engage the bottom outer surface of a said dish, operating means formoving said movable clamping means longitudinallybfsaid axis and in anopposite direction to move a dish clamped thereby toward said chipping4means in opposition to said biasing means, andfeed meansforsuccessively feeding consecutive dishes to said clamping means, saidfeed means being movable in a path traversing the path of said clampingmeans moving a Said dish toward said chipping means and beingsynchronized to feed a dish to said clamping means between movements ofthe clamping means toward said chipping means.

8. A device for removing pin fragments extending `from the bottomsurface of glazed ceramic Ydishes at varied radial distances from thecenter of said dishes,.comprising in corn- 19 chip projections in thecircular path of the chipping blade.

13. In a machine having an axis for chipping ceramic projections from aplate-like chinaware flanged dish centered on said axis, the combinationof chipping means positioned at a radial distance from said axis andadapted to engage and chip oi said projections, opposed clamping meansadapted to engage opposite sides of a dish at a distance from, andradially inwardly spaced from, said chipping means, means for movingsaid clamping means in an axial direction toward said chipping means tocarry a dish clamped thereby against said chipping means, means forpermitting said chipping means to tilt in opposite directions relativeto said dish to automatically accommodate itself to the contour of saiddish by the engagement of said clamped dish against said chipping means,and means for providing relative revolving movement about said axisbetween said clamping means and said chipping means to chip offprojections on said clamped dish.

14. The combination of chipping means adapted to chip pin fragments froma dish, clamping means for clamping a dish in position for chippingoperation, said clamping means including opposed engaging membersdisposed to engage opposite sides of a said dish intermediate itsperipheral edges, driving means for revolving one of said clamping meansand said chipping means to provide relative movement between saidchipping means and a clamped dish around a common axis, reciprocatingmeans for moving an engaging member of said clamping meanslongitudinally of said axis toward the other said engaging member tocarry a dish clamped therebetween toward said chipping means and to holdsaid clamped dish in firm engagement therewith, and resilient means forcushioning the movement of said clamping means and clamped dish towardsaid chipping means and for thereafter moving the said dish away fromsaid chipping' means.

15. The combination of chipping means adapted to chip pin fragments froma, dish,

20 clamping means for clamping opposite sides of a'dish intermediate itsperiphery and in position for chipping operation, driving means forrevolving one of said clamping means and said chipping means to providerelative movement between said chipping means and a clamped dish arounda common axis, reciprocating means for moving said clamping meanslongitudinally of said axis to a clamping position relative to a saiddish and to carry a clamped dish toward said chipping means and to holdsaid clamped dish in firm engagement therewith, resilient means forcushioning the movement of said clamping means and clamped dish towardsaid chipping means and for thereafter moving the said dish away fromsaid chipping means, and mounting means for mounting said chipping meansto cause said chipping means to shift position in conformity with theshape of said clamped dish with said chipping means, said mounting meansincluding resilient means for urging said chipping means parallel tosaid axis toward said dish clamped by said clamping means.

ROBERT HUGH NILE. MICHAEL S. ROBERTS.

REFERENCES CITED The following references are of record in the iile ofthis patent:

UNITED STATES PATENTS Number Name Date 1,888,710 Arter et al Nov. 22,1932 1,989,517 Holmes Jan. 29, 1935 2,152,193 Johanning Mar. 28, 19392,194,780 Andersen Mar. 26, 1940 2,270,590 Johnson Jan. 20, 19422,272,055 Carlson Feb. 3, 1942 2,387,927 Miller Oct. 30, 1945 2,468,404Miller Apr. 26, 1949 FOREIGN PATENTS Number Country Date '71,616 GermanyNov. 1, 1915 Certificate of Correction Patent No. 2,533,892 December 12,1950 ROBERT HUGH NILE ET AL.

It is hereby certified that error appears in the printed specication ofthe above numbered patent requiring correction as follows:

Column 15, lines 9, 10 and l1, strike out the words movable in a secondline of action traversing at right angles the first line of action andinsert the same after means in line 17,' column 18, line 49, forchpiping read chipping; line I60, after the Word and comma member,strike out a; and that the said Letters Patent should be read ascorrected above, so that the same may conform to the record of the casein the Patent Oce.

Signed and sealed this 20th day of February, A. D. 1951.

THOMAS F. MURPHY,

Assistant Commissioner of Patente.

